Rotary milling process and device

Details Rotary milling process and device Rotary milling process and device

B - Operations, Transporting

23

C

B23C 3/06 (2006.01) B23C 5/20 (2006.01)

Patent

CA 2240154

The invention relates to a process and a device for machining of workpieces (10) like crankshafts or similar components which are rotated about their own axis during machining, at least two mutually independently operating rotary milling tools (15, 16, 21, 22) performing material-removing operations simultaneously at different points on the workpiece. In order to maximize the edge life of the tools used, with special regard to the most uniform wear possible on all the rotary milling tools, it is proposed that the rotation speed of the tools be matched or varied to provide an optimum cutting operation and the rotation speed of the second and any other rotary milling tool be controlled dependently upon the tool rotation speed predetermined by the matching or variation.

L'invention concerne un procédé et un dispositif d'usinage de pièces (10), telles que des villebrequins ou des composants similaires, que l'on fait tourner sur leur axe pendant l'usinage tandis qu'au moins deux outils de fraisage (15, 16, 21, 22) par rotation, fonctionnant indépendamment l'un de l'autre, effectuent simultanément des opérations d'enlèvement de matières en différents points de la pièce. Pour maximiser la durabilité des outils utilisés, tout en visant une usure de tous les outils de fraisage qui soit la plus régulière possible, il est proposé, selon l'invention, que la vitesse de rotation des outils soit adaptée ou variée pour permettre une opération d'enlèvement de copeaux optimale et que la vitesse de rotation du deuxième ou de chaque autre outil de fraisage par rotation soit régulée en fonction de la vitesse de rotation d'outil prédéterminée par l'adaptation ou la variation.

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